Food allergy or food hypersensitivity can develop to almost any protein or carbohydrate component of food. It most commonly develops in response to protein of the food of a particular food origin; dairy products, beef, wheat gluten, chicken, chicken eggs, lamb, and soy are commonly associated with food allergies in dogs. Food allergy can develop at almost any age. Food allergy may produce any of the clinical signs previously discussed including itching, digestive disorders, and respiratory distress. A dog may have multiple types of allergy, such as both food allergy and atopy making the exact diagnosis of a dog’s itching quite challenging.
This post is pretty old, so I am not sure if anyone will read this. I have an allergic dog and it is NOT food allergies. If you can solve your dog’s allergies by diet then you are lucky. I have struggled with my dog allergies for years and I can offer some helpful advice. Also, I just had to put my dog back on steroids after several years and I can say the side effect are bad (the reason I came here). Anyway, I found a pretty good solution to manage my dogs allergies. You need to give the dog a bath every week using Ketochlor shampoo followed by a hydrocortisol shampoo. I put a video up on YouTube about it that nobody watches. Search for “Solution for itchy dog Nutfork”. I really hope this can help you! Dog allergies are really frustrating!